The Business & Finance CIO 100 Index 2025, in association with Project Foundry, recognises the top 100 digital leaders working across some of the most innovative companies in Ireland today.
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The full list is available to download here
Eddie O’Callaghan, Head of IT
Bord na Móna
Finance and leadership skills are key strengths he also possesses. O’Callaghan has a strong track record in the execution of complex multi-disciplined projects, evidenced by the various achievements in his career.
Killian O’Connell, Chief Information Officer
Davy Stockbrokers
Killian O’Connell has worked at Davy Stockbrokers for over twenty-eight years. He started working at the company in 1995 as a Senior Software Engineer. O’Connell was made IT Business Applications Manager in 1998 before becoming the firm’s Chief Information Officer in 2012. He holds a BSc in Computer Applications from Dublin City University.
Keith O’Connor, Director of IT
Cpl
An accomplished IT professional, Keith O’Connor has extensive experience gained from nineteen years working with Ireland’s top talent solutions company. Fifteen of these were spent in a leadership position delivering strategic and innovative solutions that match the needs of Cpl’s clients and candidates.
With a proven track record delivering business value aligned with customer needs through technology innovation and learning, O’Connor leads a dynamic team that approaches their work with objectivity, positivity and integrity to deliver excellent results.
Mary O’Connor, Chief Information Officer
ESB
of driving business transformation through the application of data and technology and digital ways of working. Mary has a wealth of experience from over 30 years working in a wide range of disciplines and functions at all levels within ESB. She has a strong track record of developing and implementing strategies in a variety of businesses across ESB, of motivating teams and driving business performance through people, innovation and technology.
She has led teams at all levels of the organisation in successful transformation, working closely with internal and external partners to do so. Mary is an IT graduate of Trinity College and holds an ACCA post-graduate diploma in Accounting and Finance. She is a coach and mentor and is passionate about supporting people in their development to enable them to reach their full potential. In addition, Mary sits on the Audit & Risk Committee of St. James Hospital, Dublin.
Eilish O’Connor, Group CTO
Viatel Technology Group
A prominent voice within the Irish tech landscape, Eilish frequently speaks at key industry events and engages in national conversations regarding the future of healthcare technology, the implications of regulations like DORA and NIS2, and the vital need for a cyber-resilient economy. She’s also an active member of WiCyS (Women in Cyber Security) and CWIT (Connecting Women in Technology), and has been invited onto the Cisco EMEA SMB Partner and Barracuda Partner Advisory Boards, regularly exchanging ideas with industry colleagues on innovation, security, and digital transformation. Internally, Eilish dedicates herself to mentoring new talent and fostering inclusive leadership. Her career trajectory from intern to CTO, which she recently shared at Viatel’s Interns Day 2025, underscores her dedication to nurturing the tech leaders of tomorrow.
Dave O’Donovan, Head of Business Transformation
Aer Lingus
Gerard O’Flaherty, Chief Information Officer
Fexco Corporate Payments
Tom O’Leary, Chief Information Officer
ICON plc
Prior to joining ICON, he worked for SmithKline Beecham and later GlaxoSmithKline and held positions in Data Management, Project Management and Resource Management. O’Leary holds a Degree in Medicinal Chemistry and a Master’s in Data Management from Kingston University in Surrey and is a Member of the Royal Society of Chemistry.
Eoin O’Reilly, Head of AI & Data
EY Ireland
Conor Patterson, Chief Technology Officer
BT Ireland
Conor Patterson was appointed Chief Technology Officer for BT Ireland in 2020. Prior to this, he held various leadership roles in BT, including BT Ireland Chief Information Officer and Head of IT, Managed Services UK.
BT Ireland delivers integrated and secure communications and IT services to major multinational companies and indigenous exporters, as well as wholesaling to other communications companies.
Patterson has responsibility for setting and delivering BT Ireland’s technology vision and strategy across all aspects of the Ireland business, from core design of national network and software engineering through to support and development of business-critical systems. Providing the business with the best technology to enable profitable growth, drive competitor advantage and business efficiency while simplifying customer and colleague experience with a particular emphasis on digital transformation journey.
Nick Power, Interim Chief Product and Technology Officer
Cubic³
Nick Power joined Cubic³ in 2022 as the Chief Technology Officer. Prior to that, he held roles as CTO at Verizon Connect, Development Manager at Houghton Mifflin Harcourt and Unum. Nick is an experienced software leader with 28+ years working in the software industry which has led to an in-depth knowledge of all areas of product development. He is a graduate from Waterford Institute of Technology, holding a Bachelor’s in Applied Computing.
Peter Quinn, Chief Information Officer
DCC plc
Prior to joining DCC, he worked as an IT consultant with an international firm where he specialised in the delivery of complex IT solutions across a range of business sectors. He had previously worked in the food and transport industries in a variety of IT leadership roles.
Katrina R. Redmond, SVP & Chief Information Officer
Eaton group
Redmond joined Eaton in 2021. Prior to Eaton, she worked for Hubbell, where she served as vice president and CIO. Throughout her career, she has guided digital transformations and global e-commerce solutions and delivered global enterprise system implementations.
Redmond has held IT leadership roles at ABB, GE Grid Solutions, GE Industrial Solutions and GE Plastics. She received a Bachelor of Science degree in biology and psychology from the University of Georgia. She later received a Master of Science degree in industrial engineering from the Southern Polytechnic State University. Redmond has served on the GE Women in Technology Board and received a CIO 100 Award in 2013.
Stephen Reidy, Chief Information Officer
Three Ireland
Dave Robertson, Interim Chief Information Officer
Primark
Mark Ryan, Head of IT
CityJet DAC
Shane Slattery, Chief Information Officer
Dawn Meats
The company operates in twelve countries, exports to over fifty countries, has over 7,000 employees and a turnover which is in excess of €2bn. A Master’s degree graduate of the Michael Smurfit Business College, Slattery is also a certified Prince2 project practitioner, MsP practitioner and ITIL Expert.
Richard Smith, CIO
NSSO
Richard has had roles in Aer Lingus, RTÉ and is currently the Chief Information Officer of the National Shared Services Office of the Irish Government. In addition to creating and delivering the NSSO’s ICT Strategy, he is also the technology lead for the delivery of the Irish Government’s Financial Shared Services System, which will deliver services to over 49 Public Sector Bodies.
Mike Tesar, Chief Technology Officer
LetsGetChecked
His specific expertise lies in system architecture design and development, project management and product roll-out in enterprise software development and deployment.
He has incorporated his vision of a data lake and the need for data scientists and experts working off this to come up with intelligence from the data that feeds back into the product continuously. This allows the company to give customers dynamic health insights and proactive advice.
Fran Thompson, Interim Chief Information Officer
HSE
Thompson has over twenty-five years of health ICT leadership experience and has a comprehensive understanding and practical application of transformation and change management within the health sector. Before his appointment as Interim CIO, he was the Programme Director for the Strategic e-Health Programme for the Office of the CIO.
He has been involved with all aspects of ICT and has played a leading role in delivering various projects and programmes, including Hospital Administration and Hospital Clinical systems, Primary Care messaging solutions and Health Finance solutions.
Thompson led the creation and set up of the ICT Project Management Office within the HSE and has responsibility for delivering a number of key strategic e-Health programmes, including the electronic health record for the country and the Individual Health Identifier.
Patrick Tracey, CIO
Hilton Food Group
Suzanne Tracy, Chief Technology Officer
SIRO Ireland
Having started her career as a process engineer in pharmaceuticals, Suzanne has 25 years’ experience in Technology & Engineering, mainly with Vodafone Group Technology across a number of markets in Europe. Suzanne is a member of the FTTH Council Europe Board, a Board member of Vodafone Group Services Ireland Limited and was recently appointed to the Board of An Garda Síochána.
Niall Twomey, Chief Technology Officer
Fenergo
Derek Wilson, Group Chief Information Officer
Origin Enterprises
Derek Wilson leads Origin’s technology strategy, governance, shared services, transformation programs and AI/data analytics across the EU, UK and LATAM markets. He has entrepreneurial P&L responsibility for Origin’s SaaS B2B digital agriculture business that works to identify, build and implement innovative geo-spatial based solutions. Wilson was previously Technology & E-Commerce Director of The Irish Times Group and Managing Director of Siemens Business Services. He also held senior positions with KPMG, Version 1 and JBA.
Rob Wilson, Chief Technology Officer
Smyths Toys
Since 2013, Rob has served as CTO at Smyths Toys. During his tenure, he has been instrumental in building a successful multi-channel business focused on delivering exceptional customer service and driving efficiency throughout the organisation. Rob is a strong believer in empowering teams to foster innovation, accountability, trust, and simplicity. Prior to joining Smyths Toys, he held positions at Havas Media, Musgrave, and Pentland Group.
